Folder consists 8 files:
Full Assembly (.stl, .fbx, .obj)
Base (.stl)
Bottom Ring (.stl)
Middle Ring (.stl)
Top Ring (.stl)
Bone (.stl) (you can duplicate it, total amount should be = 24)
Note: Dimensions are given in last screenshots
If you have any questions feel free to ask me in PM
STL (Stereolithography, filesize: 18.9 MB), OBJ (OBJ, filesize: 17.3 MB), FBX (Autodesk FBX, filesize: 6.84 MB)